Compositional Layers of the Earth

Which layer is composed of very HOT, SOLID rock that flows like plastic?

• Inner Core

• Outer Core

• Mantle

• Oceanic Crust

Which is the thickest layer? 

• Mantle

• Outer Core

• Inner Core

• Crust

This is the layer with temperatures of 20˚ - 870˚C (68˚ - 1598˚F) that is the coolest layer.

• Inner Core

• Crust

• Mantle

• Outer Core

This is the only liquid layer.

• Crust

• Inner Core

• Outer Core

• Mantle

Which layer is the most dense?

• Inner Core

• Outer Core

• Crust

• Mantle

Which layer is the least dense?

• Crust

• Mantle

• Outer Core

• Inner Core

What is the thinnest layer?

• Crust

• Mantle

• Inner Core

• Outer Core

Which layer has the least pressure?

• Crust

• Mantle

• Outer Core

• Inner Core

Identify layer  #20.

• mantle

• asthenosphere

• inner core

• outer core

The order of the earth’s compositional layers from most dense to least dense are

• Inner Core, Crust, Mantle and Outer Core

• Crust, Mantle, Outer Core and Inner Core

• Inner Core, Outer Core, Mantle and Crust

• Crust, Outer Core, Inner Core and Mantle.